Knife



Patented Mar. 2|,` |899. H. v. SMITH.

K N I F E.

(Application led Dec. 22, 1898.)

(N0 Modal.)

me Nonms PETERS co., PH

UNITED STATES PATENT OFFICE.

.HENRY V. SMITH, OF HARTFORD, CONNECTICUT, ASSIGNOR OF ONE-HALF TO E. H.SMITH, OF BRIDGEPORT, CONNECTICUT.

KNIFE.

SPECIFICATION forming part f I retters Patel-1t NO. 621,543, datedMarel; 21, 1899.

Application led December 22, 1898. Serial No. 700,001. (No model.)

^ lowing is a specification.

My invention relates to improvements in knives; and the main object ofnly improvement is to produce a knife with a good steel cutting edgeland with a surface of softer metal that will not rust.

In the accompanying drawings, Figure l is a side elevation ofl my knife.Fig. 2 is alongitudinal section on the line x' of Fig. l. Fig. 3 is anenlarged transverse section of the blade. Fig. 4l is a side elevation ofmy knife in a modified form, and Fig. 5 is atransverse section of theblade thereof.

In the construction shown in Figs. l, 2, and 3, which is ahollow-handled knife, I first make a thin steel blade or blade center6,witl1v a shank 7 of any desired length, and preferably temper the sameand then polish or clean it, so that it may be brazed or soldered. Ialso make two half handles or shells and blade sides from silver, Germansilver, brass, or alloy of some soft or non-rusting metal, the samebeing formed by means of suitable dies, one blade side 8 and half-handle9 being formed together in one piece of metal to form what I may call ahalf-knifef7 I next place the blade center 6 between the two blade sides8, with its shank 7 extending in between the half-handles orhandle-shells 9, the edges of which shells abut against each other, asindicated by the broken line 10 in Fig. 2. I then unite the partsmechanically by soldering or brazing, soldering not onlyT the abuttingedges, but .also soldering firmly the blade sides to the blade center. Iprefer that the blade center shall not extend through Yto the back -ofthe blade, and therefore 'form the back of the blade sides with turnededges 11, which abut against each other, as shown in Fig. 3. In thisknife the blade center is mainly relied upon to give the bladetherequisite elasticity and strength and cutting edge, .While the bladesides are, in effect, ve

neers to give a neat finish that willnot rust. 5e

In Figs. 4 and 5 I show a knife with a bladebody l2, of German silver oranalogous metal, which may be in one and the same piece with the solidhandle 9a. AThe cutting edge of the blade is formed from a thin strip ofsteel 6a, 55

which may be about five-thousandths of an inch in thickness and let intoa fine slit at that edge, as shown in the enlarged section, Fig. 5, thesame being firmly united to the blade sides, as before described. Inthis knife the 6o German-silver or other alloy may be rolled down togive the blade the requisite elasticity and to stiffen it, as may bedesired, the steel being depended on only to furnish a cutting edge.

In both'constructions the edge portion of the blade is composed of acentral and inserted strip of steel and two blade sides or veneers ofasofter metal mechanically secured thereto, and in both the steel is ormay haps, require no sharpening at all.

I claim as my invention` 1. A knife, the edge portion of the blade ofwhich consists of an inserted strip of steel and blade sides on thebroad sides of said be so thin as to be easily kept sharp or, per;1

strip to which they are mechanically secured,

substantially as described.

2. A knife consisting of a blade center of steel and two blade sides andhandle-shells all mechanically secured together, substann tially asdescribed.

' HENRY V. SMITH. Witnesses:

J oHN H. KIRKHAM, G. ARTHUR HADsELL.

